Table S1 Dates for when pines in general and more specifically, P. radiata, were introduced into some Southern Hemisphere countries. Dates are also recorded for when the susceptible species P. radiata was extensively grown in plantations and when the first reports and epidemics of Dothistroma needle blight (DNB) occurred. Pines introduced P. radiata introduced Kenya Extensive plantations of P. radiata 1945-1960 (1) Tanzania Malawi Zimbabwe South Africa 1902 (3) late 17th century (1) Chile 1928-1934 resumed again in 1955 (1) 1928-1934 (2) resumed again in 1955 (1) First reports of DNB 1964 (3) 1) Lavery & Mead 1998; 2) Gibson 1972; 3) Gibson et al 1964 1957 -young P. radiata Tanganyika (Tanzania) (1) 1940's on P. radiata (1) 1960 (1) 1) Gibson 1972 1962 (1) 1) Gibson 1972; 2) Lavery & Mead 1998 Middle 1930's on P. radiata (4) 1962 (1) 1) Gibson 1972; 2) Lavery & Mead 1998; 3) Poynton 1977 4) Barnes 1970 1984 increased occurrence (4, 5) 1964 - 1965 (2) 1) Poynton 1977; 2) Lavery & Mead 1998; 3) Gibson 1972; 4) Lundquist 1987; 5) Ivory 1994 1966 (5) 1) Richardson & Higgins 1998; 2) Hirst et al 1999; 3) Lavery & Mead 1998; 4) Gilmour 1967; 5) Gibson 1972 1) Richardson & Higgins 1998; 2) Lavery & Mead 1998; 3) Edwards & Walker 1978 1884 (2) 1965 on P. canariensis (3) 1885 (1) 1940's (1) 1957 on P. radiata (2) 1962 on P. attenuata x P. radiata but probably present since late 1950's (4) 1975 on P. radiata (3) shortly before 1830 (1) 1859 (2) 1870's (3) Australia 1770's with British colonization (1) 1857 (1) 1875 (2) References 1960 on P. radiata (from Tanzania) (2) 1850 (2) New Zealand Epidemics of DNB 1977 (3) 1) Toro & Gessel 1999; 2) Gibson 1972 Barnes RD (1970) The prospects for re-establishing Pinus radiata as a commercially important species in Rhodesia. South African Forestry Journal, 72, 17-19. Edwards DW, Walker J (1978) Dothistroma needle blight in Australia. Australian Forest Research, 8, 125-137. Gibson IAS (1972) Dothistroma blight of Pinus radiata. Annual review of Phytopathology, 10, 51-72. Gibson IAS, Christiansen P, Munga F (1964) First observations in Kenya on a foliage disease of pines caused by Dothistroma pini Hulbary. Commonwealth Forest Review, 45, 67-76. Gilmour JW (1967) Distribution and significance of the needle blight of pines caused by Dothistroma pini in New Zealand. Plant Disease Reporter, 51, 727-730. Hirst P, Richardson TE, Carson SD, Bradshaw RE (1999) Dothistroma pini genetic diversity is low in New Zealand. New Zealand Journal of Forest Science 29, 459-472. Ivory MH (1994) Records of foliage pathogens of Pinus species in tropical countries. Plant Pathology, 43, 511-518. Lavery PB, Mead DJ (1998) Pinus radiata: a narrow endemic from North America takes on the world. In: Ecology and biogeography of Pinus (Richardson DM, ed) pp 432-449. Cambridge University Press, Cambridge, United Kingdom. Lundquist JE (1987) Fungi associated with Pinus in South Africa. Part II. The Cape. South African Forestry Journal, 140, 4-15. Poynton RJ (1977) Tree planting in Southern Africa. Vol. 1 The Pines. South African Forestry Research Institute. Richardson DM, Higgins SI (1998) Pines as invaders in the southern hemisphere. In: Ecology and biogeography of Pinus (Richardson DM, ed.) pp 450-473. Cambridge University Press, Cambridge, UK. Toro J, Gessel SP (1999) Radiata pine plantations in Chile. New Forests, 18, 33-44.